The state-to-state dynamics of the H*(n) + HD → D*(n′) + H2 reactive scattering at the collision energy of 0.5 eV have been carried out for the first time by using H-atom Rydberg tagging time-of-flight technique. Experimental results show that the angular distribution of the total H2 products presents clearly forward-backward asymmetric, which considerably differs from that of the corresponding H+ + HD → D+ + H2 reaction predicted by previously theoretical calculations. Such disagreement between these two processes suggests that the Fermi independent-collider model is also not valid in describing the dynamics of isotopic variants of the H* + H2 reaction. The rotational state distribution of the H2 products demonstrates a saw-toothed distribution with odd-j′ > even-j′. This interesting observation is strongly influenced by nuclear spin statistics.
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21 January 2014
Research Article|
January 16 2014
State-to-state dynamics of the H*(n) + HD → D*(n′) + H2 reactive scattering
Shengrui Yu;
Shengrui Yu
State Key Laboratory of Molecular Reaction Dynamics,
Dalian Institute of Chemical Physics
, Chinese Academy of Sciences, 457 Zhongshan Road, Dalian 116023, China
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Shu Su;
Shu Su
State Key Laboratory of Molecular Reaction Dynamics,
Dalian Institute of Chemical Physics
, Chinese Academy of Sciences, 457 Zhongshan Road, Dalian 116023, China
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Dongxu Dai;
Dongxu Dai
State Key Laboratory of Molecular Reaction Dynamics,
Dalian Institute of Chemical Physics
, Chinese Academy of Sciences, 457 Zhongshan Road, Dalian 116023, China
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Kaijun Yuan;
Kaijun Yuan
a)
State Key Laboratory of Molecular Reaction Dynamics,
Dalian Institute of Chemical Physics
, Chinese Academy of Sciences, 457 Zhongshan Road, Dalian 116023, China
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Xueming Yang
Xueming Yang
a)
State Key Laboratory of Molecular Reaction Dynamics,
Dalian Institute of Chemical Physics
, Chinese Academy of Sciences, 457 Zhongshan Road, Dalian 116023, China
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a)
Authors to whom correspondence should be addressed. Electronic addresses: kjyuan@dicp.ac.cn and xmyang@dicp.ac.cn
J. Chem. Phys. 140, 034310 (2014)
Article history
Received:
September 18 2013
Accepted:
December 20 2013
Citation
Shengrui Yu, Shu Su, Dongxu Dai, Kaijun Yuan, Xueming Yang; State-to-state dynamics of the H*(n) + HD → D*(n′) + H2 reactive scattering. J. Chem. Phys. 21 January 2014; 140 (3): 034310. https://doi.org/10.1063/1.4861759
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